|
Abstract:
Jets from active galactic nuclei (AGN) are a recurrent phenomenon in a
galaxy’s lifetime. Understanding their life-cycle is essential for
quantifying the energetic impact they have on their surrounding
medium. This is in fact a key ingredient driving the thermal evolution
of galaxy groups/clusters and, in turn, the evolution of galaxies in
the universe over cosmic times. In these years the unprecedented
sensitivities provided by SKA precursors/pathfinders are significantly
pushing forward the study of the jet life-cycle and the jets’
interaction with the external medium. Here I will discuss some recent
progress made in this field using observations at MHz-frequencies,
which are especially suited to unveil the oldest populations of
particles injected by AGN jets in their surrounding environment. These
are allowing us to select new samples of jetted AGN in different
phases of their evolution, as well as follow the interaction/mixing of
the AGN jet plasma with the surrounding medium for hundreds of million
years.
|
